Method and system for measuring chest parameters, especially during CPR
First Claim
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1. A system comprising:
- a measuring unit disposed on a chest of a person;
a drive unit including a drive coil generating a magnetic field oscillating at a predetermined frequency, the drive unit positioned on an opposite side of the person from the measuring unit, the drive unit comprising a secondary coil that measures a generated-field strength;
wherein the measuring unit is adapted to measure a magnetic field strength;
wherein a distance between the measuring unit and the drive unit is calculated as a function of magnetic field strength; and
wherein a field strength generated by the drive unit is adjusted until the generated-field strength obtains a predetermined strength at the secondary coil thereby reducing influences of metal objects.
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Abstract
This invention relates to a system for monitoring the position of a measuring unit when placed on a person, especially on the chest of a person, the system comprising a drive unit generating a magnetic field oscillating at a predetermined frequency adapted to be positioned on the opposite side of the person, e.g. chest to back dimensions, and the measuring unit being adapted to measure the magnetic field strength, the system including calculating means for calculating the distance between the measuring unit and the drive unit.
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15 Claims
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1. A system comprising:
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a measuring unit disposed on a chest of a person; a drive unit including a drive coil generating a magnetic field oscillating at a predetermined frequency, the drive unit positioned on an opposite side of the person from the measuring unit, the drive unit comprising a secondary coil that measures a generated-field strength; wherein the measuring unit is adapted to measure a magnetic field strength; wherein a distance between the measuring unit and the drive unit is calculated as a function of magnetic field strength; and wherein a field strength generated by the drive unit is adjusted until the generated-field strength obtains a predetermined strength at the secondary coil thereby reducing influences of metal objects. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification